Differences

This shows you the differences between two versions of the page.

--- v5:userguide:learn_caching:memcached [2016/03/28 03:11] – created mnewnham
+++ v5:userguide:learn_caching:memcached [2018/07/16 20:18] (current) – start functions lowercase peterdd
@@ Line 1: / Line 1: @@
+<- v5:userguide:learn_caching:disk_caching|Disk Based Caching ^ v5:userguide:userguide_index|List Of Tutorials ^ v5:userguide:learn_caching:cache_ttl|Understanding Time-To-Live ->
-<- v5:userguide:learn_caching:disk_caching|Disk Based Caching ^ v5:userguide:userguide_index|List Of Tutorials ^ v5:userguide:learn_caching:adodb_coding|ADOdb Coding ->
 ~~NOTOC~~
 ====== Memcached Setup ======
-Memcached provides a controlled, server based memory caching service. The server is reasonably easily configured and installed, but provides a sophisticated caching configuration. PHP support for the library is available through the PHP PEAR memcached library. For largr environments, multiple memcached hosts can be specified.
+<WRAP right tip box 300px>
-<WRAP tip>
+== Learn More ==
-There are 2 pear modules for connection to a Memcached server, the older [[https://pecl.php.net/package/memcache|PEAR Memcache library]] and the newer [[https://pecl.php.net/package/memcached|PEAR Memcached library]].
+[[https://memcached.org/|Configuring Memcached]]
-  * Windows support is only available for the older Memcache library.
-  * ADOdb has only been tested against the older library
 </WRAP>
-===== Description =====
-This section describes connection to an already configured Memcache server. Information about installation and configuration of Memcached servers can be found [[https://memcached.org/|here]].
+[[wp>Memcached]] provides a controlled, server-based memory caching service. The server is reasonably easily configured and installed, but provides a sophisticated caching configuration. PHP support for the library is available through the PHP PEAR //memcache// or //memcached// libraries. If both are available, the //memcache// library will be used.
+Your platform and PHP version will be the primary decision factors between using //memcache// or //memcached//. In general, the following guidelines can be used.
+^ Platform  ^ PHP Version  ^ Library   ^
+| Windows   | 5.x, 7.x     | [[https://pecl.php.net/package/memcache|PEAR Memcache library]] |
+| Unix      | 5.x          | ::: |
+| :::       | 7.x          | [[https://pecl.php.net/package/memcached|PEAR Memcached library]]|
+It's also worth noting that compression is not supported with //memcached//. If you need cache compression, the //memcache// library is recommended.
+For larger environments, distributed Memcache hosts can be specified.
+----------------------------------------------
 ===== Usage =====
@@ Line 16: / Line 27: @@
 $db = NewADOConnection($driver='mysqli');
 /*
-* Enable memcache
+ * Enable memcache
-*/
+ */
 $db->memCache = true;
 /*
-* Add one or more servers, for use in distributed systems
+ * Add one or more servers, for use in distributed systems
-*/
+ */
 $db->memCacheHost = array('192.168.0.78', '192.168.0.79', '192.168.0.80');
 /*
-* Optionally add the server port if it differs from the default
+ * Optionally add the server port if it differs from the default
-*/
+ */
 $db->memCachePort = 11211;
 /*
-* Use 'true' to store the item compressed (uses zlib)
+ * Use 'true' to store the item compressed (uses zlib)
-*/
+ * Note; Compression is only supported using the memcache library. This
-$db->memCacheCompress = false;
+ *       parameter will be ignored when using the memcached library
+ */
+$db->memCacheCompress = false;
 /*
-* We connect to the database, not the memcache server
+ * We connect to the database, not the memcache server
-*/
+ */
-$db->Connect('localhost','mysql-user','mysql-password','employees');
+$db->connect('localhost','mysql-user','mysql-password','employees');
 </code>